摘要
植被在陆面参数化方案(Land Surface Parameterizations,LSPs)中的描述经历着从定性描述向定量描述发展的过程。这一方面是由于陆面过程研究的深入,另一方面则得益于地表植被信息获取方式的进步,尤其是卫星遥感技术的发展。对三代LSPs中的植被描述做了简要概述,并介绍了卫星遥感在植被参数反演上的发展和应用情况。其中包括:①定性描述,主要指地表覆盖类型的描述方式;②部分参数定量描述,指SiB2等模式中对LAI等时空变化较大的少数参数由卫星资料直接反演的赋值方式;③植被特征连续分布(VCF)定量描述,一种完全定量的描述方式。
The vegetation influences the exchange of energy, mass and momentum between the land surface and atmosphere. With the increase of our understanding and the development of remote sensing, the description of land surface vegetation status is changing in the three generations of land surface parameterizations （LSPs）. In the second generation of LSPs, the values of the vegetation parameters are obtained from the land cover maps that are the qualitative descriptions about the land surface. In some third generation of LSPs, some important vegetation parametem are retrieved directly from the satellite data, and this provides a more quantitative description of the vegetation status. Vegetation Continuous Field （VCF） is a quantitative description about the vegetation, which can be viewed as an alternative to the traditional classification approach for using remote sensing data to characterize global land cover. This paper reviews how the descriptions varies from a qualitative one to the more quantitive ones, and introduces the application of satellite remote sensing to retrieving these vegetation variations.
出处
《地球科学进展》
CAS
CSCD
北大核心
2008年第10期1050-1060,共11页
Advances in Earth Science
基金
国家自然科学基金资助项目"基于植被特征连续分布(VCF)的多角度资料遥感反演陆面参数方法研究"(编号:40601063)
中国科学院知识创新工程重要方向项目"中国西北西部气候和水分过程的变化特征及其相互联系的研究"(编号:KZCX3-SW-229)资助
关键词
陆面过程
卫星
遥感
植被
VCF
Vegetation
Satellite
Remote sensing
Land surface parameterizations.
